A telephone pole 40 feet high is to be anchored with a guy wire from its center, and the guy is to make an angle of 45° with the ground. Allowing 2 extra feet for splicing, how long must the guy wire be?

100 points, hi, i’m not sure how to get the equation from the graph and table.

If the speed of an electromagnetic wave is 100,000 cm/s and its wavelength is 100 cm, what is its frequency? a) 100,000 cycles per second (hz) b) 1 × 10-3 cycles per second (hz) c) 10,000,000 cycles per second (hz) d) 1,000 cycles per second (hz)

Consider the function f(x)=-5x+3 what is f(-2)